Spring4.* 中整合 Hibernate
2016-07-02 23:02
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1. Spring 整合 Hibernate 整合什么 ?
1). 有 IOC 容器来管理 Hibernate 的 SessionFactory
2). 让 Hibernate 使用上 Spring 的声明式事务
2. 整合步骤:
1). 加入 hibernate
①. jar 包
②. 添加 hibernate 的配置文件: hibernate.cfg.xml
③. 编写了持久化类对应的 .hbm.xml 文件。
2). 加入 Spring
①. jar 包
spring-aop-4.0.0.RELEASE.jar
spring-aspects-4.0.4.RELEASE.jar
spring-beans-4.0.0.RELEASE.jar
spring-context-4.0.0.RELEASE.jar
spring-core-4.0.0.RELEASE.jar
spring-expression-4.0.0.RELEASE.jar
commons-logging-1.2.jar
②. 加入 Spring 的配置文件
3). 整合.
3. 编写代码
整合工程目录结构如下图所示:
引用到的jar包如下:
spring的配置文件:applicationContext.xml
hibernate配置文件:hibernate.cfg.xml
数据库配置文件:db.properties
DAO层接口文件:BookShopDao
DAO层接口实现类:
Entity:Account
Book
hibernate对实体的映射文件:
Account.hbm.xml
Book.hbm.xml
自定义异常:
BookStockException.java
UserAccountException.java
service 接口:
BookShopService.java
Cashier.java
service实现类层:
BookShopServiceImpl.java
CashierImpl.java
junit测试用例
SpringHibernateTest.java
1). 有 IOC 容器来管理 Hibernate 的 SessionFactory
2). 让 Hibernate 使用上 Spring 的声明式事务
2. 整合步骤:
1). 加入 hibernate
①. jar 包
②. 添加 hibernate 的配置文件: hibernate.cfg.xml
③. 编写了持久化类对应的 .hbm.xml 文件。
2). 加入 Spring
①. jar 包
spring-aop-4.0.0.RELEASE.jar
spring-aspects-4.0.4.RELEASE.jar
spring-beans-4.0.0.RELEASE.jar
spring-context-4.0.0.RELEASE.jar
spring-core-4.0.0.RELEASE.jar
spring-expression-4.0.0.RELEASE.jar
commons-logging-1.2.jar
②. 加入 Spring 的配置文件
3). 整合.
3. 编写代码
整合工程目录结构如下图所示:
引用到的jar包如下:
spring的配置文件:applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"> <!-- 配置自动扫描的包 --> <context:component-scan base-package="com.atguigu.spring.hibernate"></context:component-scan> <!-- 配置数据源 --> <!-- 导入资源文件 --> <context:property-placeholder location="classpath:db.properties"/> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="user" value="${jdbc.user}"></property> <property name="password" value="${jdbc.password}"></property> <property name="driverClass" value="${jdbc.driverClass}"></property> <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property> <property name="initialPoolSize" value="${jdbc.initPoolSize}"></property> <property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property> </bean> <!-- 配置 Hibernate 的 SessionFactory 实例: 通过 Spring 提供的 LocalSessionFactoryBean 进行配置 --> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <!-- 配置数据源属性 --> <property name="dataSource" ref="dataSource"></property> <!-- 配置 hibernate 配置文件的位置及名称 --> <!-- <property name="configLocation" value="classpath:hibernate.cfg.xml"></property> --> <!-- 使用 hibernateProperties 属相来配置 Hibernate 原生的属性 --> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.format_sql">true</prop> <prop key="hibernate.hbm2ddl.auto">update</prop> </props> </property> <!-- 配置 hibernate 映射文件的位置及名称, 可以使用通配符 --> <property name="mappingLocations" value="classpath:com/atguigu/spring/hibernate/entities/*.hbm.xml"></property> </bean> <!-- 配置 Spring 的声明式事务 --> <!-- 1. 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <!-- 2. 配置事务属性, 需要事务管理器 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="get*" read-only="true"/> <tx:method name="purchase" propagation="REQUIRES_NEW"/> <tx:method name="*"/> </tx:attributes> </tx:advice> <!-- 3. 配置事务切点, 并把切点和事务属性关联起来 --> <aop:config> <aop:pointcut expression="execution(* com.atguigu.spring.hibernate.service.*.*(..))" id="txPointcut"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"/> </aop:config> </beans>
hibernate配置文件:hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <!-- 配置 hibernate 的基本属性 --> <!-- 1. 数据源需配置到 IOC 容器中, 所以在此处不再需要配置数据源 --> <!-- 2. 关联的 .hbm.xml 也在 IOC 容器配置 SessionFactory 实例时在进行配置 --> <!-- 3. 配置 hibernate 的基本属性: 方言, SQL 显示及格式化, 生成数据表的策略以及二级缓存等. --> <property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property> <property name="hibernate.show_sql">true</property> <property name="hibernate.format_sql">true</property> <property name="hibernate.hbm2ddl.auto">update</property> <!-- 配置 hibernate 二级缓存相关的属性. --> </session-factory> </hibernate-configuration>
数据库配置文件:db.properties
jdbc.user=root jdbc.password=123456 jdbc.driverClass=com.mysql.jdbc.Driver jdbc.jdbcUrl=jdbc:mysql:///spring jdbc.initPoolSize=5 jdbc.maxPoolSize=10 #...
DAO层接口文件:BookShopDao
package com.lltse.spring.hibernate.dao; public interface BookShopDao { //根据书号获取书的单价 public int findBookPriceByIsbn(String isbn); //更新数的库存. 使书号对应的库存 - 1 public void updateBookStock(String isbn); //更新用户的账户余额: 使 username 的 balance - price public void updateUserAccount(String username, int price); }
DAO层接口实现类:
Entity:Account
package com.lltse.spring.hibernate.entities; public class Account { private Integer id; private String username; private int balance; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public int getBalance() { return balance; } public void setBalance(int balance) { this.balance = balance; } }
Book
package com.lltse.spring.hibernate.entities; public class Book { private Integer id; private String bookName; private String isbn; private int price; private int stock; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getBookName() { return bookName; } public void setBookName(String bookName) { this.bookName = bookName; } public String getIsbn() { return isbn; } public void setIsbn(String isbn) { this.isbn = isbn; } public int getPrice() { return price; } public void setPrice(int price) { this.price = price; } public int getStock() { return stock; } public void setStock(int stock) { this.stock = stock; } }
hibernate对实体的映射文件:
Account.hbm.xml
<?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="com.lltse.spring.hibernate.entities.Account" table="SH_ACCOUNT"> <id name="id" type="java.lang.Integer"> <column name="ID" /> <generator class="native" /> </id> <property name="username" type="java.lang.String"> <column name="USERNAME" /> </property> <property name="balance" type="int"> <column name="BALANCE" /> </property> </class> </hibernate-mapping>
Book.hbm.xml
<?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="com.lltse.spring.hibernate.entities.Book" table="SH_BOOK"> <id name="id" type="java.lang.Integer"> <column name="ID" /> <generator class="native" /> </id> <property name="bookName" type="java.lang.String"> <column name="BOOK_NAME" /> </property> <property name="isbn" type="java.lang.String"> <column name="ISBN" /> </property> <property name="price" type="int"> <column name="PRICE" /> </property> <property name="stock" type="int"> <column name="STOCK" /> </property> </class> </hibernate-mapping>
自定义异常:
BookStockException.java
package com.lltse.spring.hibernate.exceptions; public class BookStockException extends RuntimeException{ /** * */ private static final long serialVersionUID = 1L; public BookStockException() { super(); // TODO Auto-generated constructor stub } public BookStockException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) { super(message, cause, enableSuppression, writableStackTrace); // TODO Auto-generated constructor stub } public BookStockException(String message, Throwable cause) { super(message, cause); // TODO Auto-generated constructor stub } public BookStockException(String message) { super(message); // TODO Auto-generated constructor stub } public BookStockException(Throwable cause) { super(cause); // TODO Auto-generated constructor stub } }
UserAccountException.java
package com.lltse.spring.hibernate.exceptions; public class UserAccountException extends RuntimeException{ /** * */ private static final long serialVersionUID = 1L; public UserAccountException() { super(); // TODO Auto-generated constructor stub } public UserAccountException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) { super(message, cause, enableSuppression, writableStackTrace); // TODO Auto-generated constructor stub } public UserAccountException(String message, Throwable cause) { super(message, cause); // TODO Auto-generated constructor stub } public UserAccountException(String message) { super(message); // TODO Auto-generated constructor stub } public UserAccountException(Throwable cause) { super(cause); // TODO Auto-generated constructor stub } }
service 接口:
BookShopService.java
package com.lltse.spring.hibernate.service; public interface BookShopService { public void purchase(String username, String isbn); }
Cashier.java
package com.lltse.spring.hibernate.service; import java.util.List; public interface Cashier { public void checkout(String username, List<String> isbns); }
service实现类层:
BookShopServiceImpl.java
package com.lltse.spring.hibernate.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.lltse.spring.hibernate.dao.BookShopDao; import com.lltse.spring.hibernate.service.BookShopService; @Service public class BookShopServiceImpl implements BookShopService { @Autowired private BookShopDao bookShopDao; /** * Spring hibernate 事务的流程 * 1. 在方法开始之前 * ①. 获取 Session * ②. 把 Session 和当前线程绑定, 这样就可以在 Dao 中使用 SessionFactory 的 * getCurrentSession() 方法来获取 Session 了 * ③. 开启事务 * * 2. 若方法正常结束, 即没有出现异常, 则 * ①. 提交事务 * ②. 使和当前线程绑定的 Session 解除绑定 * ③. 关闭 Session * * 3. 若方法出现异常, 则: * ①. 回滚事务 * ②. 使和当前线程绑定的 Session 解除绑定 * ③. 关闭 Session */ @Override public void purchase(String username, String isbn) { int price = bookShopDao.findBookPriceByIsbn(isbn); bookShopDao.updateBookStock(isbn); bookShopDao.updateUserAccount(username, price); } }
CashierImpl.java
package com.lltse.spring.hibernate.service.impl; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.lltse.spring.hibernate.service.BookShopService; import com.lltse.spring.hibernate.service.Cashier; @Service public class CashierImpl implements Cashier{ @Autowired private BookShopService bookShopService; @Override public void checkout(String username, List<String> isbns) { for(String isbn:isbns){ bookShopService.purchase(username, isbn); } } }
junit测试用例
SpringHibernateTest.java
package com.lltse.spring.hibernate.test; import java.sql.SQLException; import java.util.Arrays; import javax.sql.DataSource; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.lltse.spring.hibernate.service.BookShopService; import com.lltse.spring.hibernate.service.Cashier; public class SpringHibernateTest { private ApplicationContext ctx = null; private BookShopService bookShopService = null; private Cashier cashier = null; { ctx = new ClassPathXmlApplicationContext("applicationContext.xml"); bookShopService = ctx.getBean(BookShopService.class); cashier = ctx.getBean(Cashier.class); } @Test public void testCashier(){ cashier.checkout("aa", Arrays.asList("1001","1002")); } @Test public void testBookShopService(){ bookShopService.purchase("aa", "1001"); } @Test public void testDataSource() throws SQLException { DataSource dataSource = ctx.getBean(DataSource.class); System.out.println(dataSource.getConnection()); } }
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